An automated valuation model is one component of a fully integrated computer-assisted mass appraisal (CAMA) system. The latter would include, for example, a geographic information system, which the Valuation Office Agency does not have.
I refer the hon. Member to the answer given to the hon. Member for Meriden (Mrs. Spelman) on 23 March 2006, Official Report, column 531W. There has been no update to the document since it was placed in the Library.